Stop mechanism for envelop-machines



PATENTED FEB. 16, 1904.

' P. I. WOLF.

STOP MECHANISM FOR ENVBLOP MACHINES.

APPLICATION FILED SEPT. 23 1903. ND MODEL. 2 SKEETB-SHBET 1.

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P. J. WOLF. STOP MECHANISM FOR ENVELOP MACHINES.

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UNITED STATES Patented February 16, 1904.

PATENT- OFFICE.

ENVELOPE COMPANY, OF ST. LOUIS, MISSOURI.

STOP MECHANISM FOR E-NVELOP-MAGHINES.

SPECIFICATION forming part of Letters Patent No. 752,499, dated February16, 1904.

Application filed September 26, 1903. Serial No. 174,780. (No model.) i

To all whom it may c0n0er n: I

Be it known that I, PAUL J. WOLF, a, citizen of the United States,residing-in the city of St. Louis, State of Missouri, have inventedcertain new and useful Improvements in Stop -Mechanism forEnvelop-Machines, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification.

My invention relates to a stop mechanism I for use inconnection with theenvelop-machine shown in Letters Patent of the United States No.635,213, issued October 12, 1899, to the Samuel Oupples EnvelopeCompany.

The object of my invention is to furnish means through which themechanism ofan envelop-machine will be thrown out of action and theoperation of the machine stopped in the event of a break occurring inthe paper from which the envelops were being made or the uniformproduction of envelops being interrupted in any manner. The stopmechanism is so constructed that in addition to its action beingautomatic in the event of interrups tion in the production of theenvelops it may be actuated manually by a direct actuation of thebelt-shifting members or from a point remote from said members. r

The invention consists in features of novelty hereinafter fullydescribed, and pointedout in the claims.

Figure I is a view, partly in vertical longitudinal section and partlyin elevation, of the envelop-conducting mechanism and my stop mechanism.Fig. II is a horizontal section taken on line H II, Fig. I, with theparts beneath said line shown in plan. Fig. III is'a rear elevation ofmy stop mechanism with parts shown invertical section, taken on line IIIIII, Fig. I. 1 Fig. IV is a view showing a detail of thebelt-shifterlever. Fig. V is a vertical section taken on line V V, Fig. I. Fig. VIis a perspective view of the dog and rocker-arm by whichlthestoprnechanism is 1 designates a part of the framework of anenvelop-machine on which is mounted a rollerframe 2; that supports oneend of each of a series of rollers 3. A duplicate of said frame ispositioned at the opposite side of the machine to support the other endsof the rollers 3.

4 designates a driven shaft on which is mounted two or moreenvelop-carrier wheels 5, the shaft'being equipped with a tight pulley 6and a loose pulley 7, adapted to receive a power-belt X.

8 designates endless bands that operate on the rollers 3 and traversethe perimeters of the carrier-wheels 5 to hold the envelope to saidwheel while they are conducted around it. 9 and 10 are delivery-belts bywhich the envelops are conducted away from the carrier: wheels 5 afterthey have passed thereabout.

All of the foregoing parts are illustrated in the Letters Patenthereinbefore mentioned, and for a more complete understanding of saidparts reference may be had to said patent.

11 designates a belt-shifter designed for engagement with the belt X toshift it from the .6 to the loose pulley 7; but such action is preventedduring the operation of the machine by parts to be hereinafterdescribed.

17 is a pawl pivoted to the shifter-operating lever ll near its upperend and having a handle 18. g This pawl is normally held projected at anangle to the operating-lever, and thereforeout ofalinementtherewith,through the medium of a spring 19. (See Figs. I and IV.)

20 is a block seated on the arm 16, and 21 is a slide-rod looselymounted in said block. One end of said slideerodprojects through theblock 20, as seen in Fig. I, to be engaged by the pawl 17, and on saidrod, at the opposite side of the block, is an expansion-spring 22, whichis confined between the block 20 and'a head 23 at the outerend of saidslide-rod.

24 designates a bracket secured to the framework of the envelop-machineand extending upwardly therefrom. (See Figs. 1, III, and V.)

25 isa slide loosely fitted to the bracket 24 through the medium ofscrews 27, that pass through longitudinal slots 26 in the slide. Thisarrangement provides a slot-and-pin connection between'said slide andbracket which permits reciprocation of the slide in upward and downwarddirections. "The slide is actuated into lowered position through themedium of a draw-spring 28, that is connected to the bracket 24 by aneye 29 and to the slide' 25 by an eye 30. I

31 is a trigger pivoted at 32 to the slide 25 and having a finger 33,adapted for engagement with the head 23 of the slide-rod 21 to hold saidslide-rod inwardly against the action of the spring 22 thereon.

34 is a spring that connects the lever-arm of the trigger 31 to theslide 25, this spring being of greaterstrength than the spring 22 on theslide-rod 21, so that it will overcome the action of the spring 22 andhold said slide-rod pressed inwardly.

35 is a pull-rodleading from the lever-arm of the trigger 31 to the farend of the envelopmachine and through the medium of which said triggermay be actuated for the purpose to be hereinafter named.

36 designates a hanger secured to the bracket 24 and extendinghorizontally over the nearby carrier-wheel 5, as seen most clearly inFig. III. On this hanger is a cap-plate 37, which with the portion ofthe hanger extending over the carrier-wheel constitutes a bearing. Insuch bearing ismounted a dog 38, having an arm 39, which'extends in' thepathway of the envelops which are carried between the carrier-wheels 5and the bands 8, that operate thereon. As the envelops are conductedbetween said wheels and bands they serve to support said dog-arm 39.

40 is a trigger-arm carried by the dog 38. 41 is a rocker-arm pivoted at42 to an extension 36 of the hanger 36, as seen in-Figs. I,

II, and VI. One end of said rocker-arm is free and projects over thehanger 36 to be engaged by the trigger-arm 40 of the dog 38. The otherend of said arm receives the pivotal connection of one end of a link 43,the other end of which is pivotally mounted on a stud 44, carried by theslide 25 at its lower end.

In the practical use of my stop mechanism the envelops (indicated by theletter A) are conducted to the carrier-wheels 5 and bands 8- of theenvelop-machine and pass between said members in a similar manner tothat set forth in Letters Patent No. 635,213, hereinbefore referred to.The parts of the stop mechanism in theirnormal positions during theoperation of rod 35, connected-to the trigger-31.

the envelop-machine are in the positions illustrated in the drawings,the power-belt X running on the tight pulley 6 and the belt-shifter 11being held from movement and actuation by the draw-spring 15 by reasonof the engagement of the slide rod 21 against the pawl 17, carried bythe shifter-operating lever 14. At such time the slide-rod 21 ismaintained in engagement with said pawl through the medium of thetrigger 31, The slide 25, by which the trigger 31 is carried, is upheldagainst the action of the draw-spring 28 in the following manner: Whilethe envelops are passing between the carrier-wheels 5 ,and bands 8, thearm' 39 rides upon said envelops, as illustrated most clearly in Figs.11 and III, and is sup ported thereby. While the arm 38 is so supported,the trigger-arm 40 of the dog 38 is positioned over the free end of therocker-arm 41, and thereby-serves to hold said rocker-arm from upwardmovement. As a result of the rocker-arm being so held the link 43 islikewise upheld and'serves to maintain the slide 25 in an elevatedposition, so that the trigger 31 will be maintained in engagement withthe slide-rod 21. In the event of there being any interruption in theproduction of envelops in the machine, so that the delivery thereof tothe carrier-wheels 5 and bands 8 ceases, the support of the dog-arm 39is lost, due to the absence of envelops beneath it, and said armtherefore swings'downwardly into the position seen in dotted lines, Fig.I. When such action occurs, the trigger arm 40 is withdrawn fromengagement with the rockerarm 41 and said rocker-arm is freed. As aconsequence thedraw-spring 28 acts to pull the slide 25 downwardly fromits previous elevated position, and the trigger 31 is withdrawn from thehead of the slide-rod 21. The spring 22 on said slide-rod then carriesthe rod outwardly to free it from engagement with the pawl 17, carriedby the shifter-operating lever 14, thereby permitting movement of saidlever and the shifter, to which it is connected, and the shifter isimmediately actuated through-the medium of the draw-spring 15 to throwthe power-belt X from the tight pulley 6 to the loose pulley 7 and stopthe operation of the machine.

' By furnishing the pawl 17- on the shifteroperating lever with a handle18 and pivotally connecting it to said lever I provide for the manualactuation of said lever to shift the power-belt at anytime withoutinterfering with the automatic features of the stop mechanism, as thepawl may be thereby withdrawn from engagement with the slide-rod 21, sothat the shifter-operating lever may be thrown. I also provide for themanual release of the shifter -operating lever from a point remotetherefrom through the-'mediumof the pull- When said pull-rod is drawnupon, the trigger-finger 33 is moved away from the head of the slide-rod21, thereby permitting movement of said slide -rod under the action ofthe spring 2-2, so that the pawl 17 will be freed to allow movement ofthe shifter-operating lever and shifter under the action of thedrawspring 15. As seen in Fig. V, I provide pinholes 24? and 25 in thebracket 24 and slide 25, respectively, which will register with eachother when the slide 25 is elevated and through which a pin may bepassed, as shown in dotted lines, to uphold the slide 25 in setting theparts of the stop mechanism before commencing the operation of the.machine.

I claim as my invention 1. In a stop mechanism for envelop machines, thecombination with envelop-convey ing means and driving-gear for saidconveying means; of a spring-controlled shifter for governing saiddriving-gear, a spring-controlled slide-rod to engage said shifter,means for holding said slide-rod with a spring associated therewithunder tension, and a dog supported by the envelops passing through themachine and having means for detachably engaging said slide-rod-holdingmeans, substantially as set forth. v v

2. In a stop mechanism for envelop-machines, the combination withenvelop-conveying means and belt-driving gear for said conveying means;of a spring-controlled shifter for engagement with the belt of saiddrivinggeaig a lever connected to and forming a part of said shifter, aspring-controlled slide-rod for engagement with said lever, aspring-coming means, of a spring-controlled shifter for governing saiddriving-gear, an operating-lever forming a part of said shifter, a pawlmounted on said lever, a spring-controlled slide-rod for engagement withsaid pawl, a spring-controlled slide, a trigger carried by said slidefor engagement with said slide-rod, a rocker arm having connection withsaid slide, anda dog-supported by the envelops passing through themachine and arranged, for engagement with said rocker-arm to maintainsaid slide in elevated posit-ion, substantially as set forth.

4. In a stop mechanism for envelop machines, the combination withenvelop-conveying means, and belt-driving gear for said con veyingmeans;of a spring-controlled belt-engaging shifter, a spring-controlledreciprocating slide-rod for engagement with said shifter, aspring-controlled slide, means carried by said slide for engaging saidslide-rod and holding it to said shifter, a dog supportedby the envelopspassing through the machine, and means connected to said slide to bedetachably engaged by said dog to maintain said slide in elevatedposition and hold said slide-rod to said shifter, substantially as setforth.

5. In a stop mechanism for envelop-machines, the combination withenvelop-convey- I ing means, and belt-driving gear for said conveymgmeans; of .a spring-controlled belt-engaging shifter, aspring-controlledreciprocating slide-rod for engagement with said shifter,

a spring-controlled slide, means carried by said slide for engaging saidslide-rod and holding it to said shifter, a dog supported by theenvelops passing through the machines, and a rocker-arm havingconnection with said slide and arranged to receive the detachableengagement of said dog to maintain said slide in elevated position andhold said slide-rod to said shifter, substantially as set forth.

PAUL J. WOLF.

In presence of E. S. KNIGHT, M. P. SMITH.

